You guys can't really claim these videos as yours, as you are just making a playlist of different bitcoin introduction videos online. Put a comment on the playlist that none of these are yours, to clarify things.
Its a YouTube Playlist and the description on YouTube says curated by Brian Cohen.
Moreover, each video states who created the video and the video is a link to the author's channel (as one would expect on a YouTube Playlist).
Moreover the videos are hosted by the original author (and have not been re-uploaded or misappropriated).
Not sure why one would need to go much further than that....
Now If I were to embed these videos on my own website..perhaps additional disclaimers might be warranted...